Higher concentrations deliver more peptide per application but are not always proportionally more effective, since the skins capacity to take up and respond to the peptide has limits
There is, per ClinicalTrials.gov, no completed human efficacy trial for 5-Amino-1MQ
Because cysteine is the least abundant of the three precursors in most physiological settings, cysteine availability is the principal bottleneck for GSH synthesis -- which is precisely the leverage point NAC addresses as a precursor
It is made from amino acids and is present in many cells, where it helps protect them from oxidative stress
Vitamin C, for example, helps regenerate glutathione after it has neutralized a free radical
So the final thoughts on NAD+ vs Glutathione IV Therapy, NAD+ fuels your bodys energy and repair systems, while Glutathione protects your cells from stress and toxins